ScanSpeak Discovery 18W, built by Zoltan, Hungary
Copyright 2018 © Troels Gravesen

Dear Mr. Gravesen, 
I built my Discovery 18 speaker and it is awesome. I couldn't find the final impedance of the speaker, 6-8 ohm?  Thank You for Your detailed instructions. I attached a photo of my speaker (black screws swap in progress...) 
Thanks,
Zoltan